Watertight zipper



FIG. 1 is a perspective view of a watertight zipper showing my new design;

FIG. 2 is a front elevational view of the watertight zipper;

FIG. 3 is a rear elevational view of the watertight zipper;

FIG. 4 is a left side elevational view of the watertight zipper;

FIG. 5 is a right side elevational view of the watertight zipper;

FIG. 6 is a top plan view of the watertight zipper; and,

FIG. 7 is a bottom plan view of the watertight zipper.

The broken lines in the drawings that illustrate portions of the watertight zipper form no part of the claimed design. 

CLAIM The ornamental design for a watertight zipper, as shown and described. 